tailwindlabs/tailwindcss v4.2.0 on GitHub

Add mauve, olive, mist, and taupe color palettes to the default theme (#19627)
Add @tailwindcss/webpack package to run Tailwind CSS as a webpack plugin (#19610)
Add pbs-* and pbe-* utilities for padding-block-start and padding-block-end (#19601)
Add mbs-* and mbe-* utilities for margin-block-start and margin-block-end (#19601)
Add scroll-pbs-* and scroll-pbe-* utilities for scroll-padding-block-start and scroll-padding-block-end (#19601)
Add scroll-mbs-* and scroll-mbe-* utilities for scroll-margin-block-start and scroll-margin-block-end (#19601)
Add border-bs-* and border-be-* utilities for border-block-start and border-block-end (#19601)
Add inline-*, min-inline-*, max-inline-* utilities for inline-size, min-inline-size, and max-inline-size (#19612)
Add block-*, min-block-*, max-block-* utilities for block-size, min-block-size, and max-block-size (#19612)
Add inset-s-*, inset-e-*, inset-bs-*, inset-be-* utilities for inset-inline-start, inset-inline-end, inset-block-start, and inset-block-end (#19613)
Add font-features-* utility for font-feature-settings (#19623)

Prevent double @supports wrapper for color-mix values (#19450)
Allow whitespace around @source inline() argument (#19461)
Emit comment when source maps are saved to files when using @tailwindcss/cli (#19447)
Detect utilities containing capital letters followed by numbers (#19465)
Fix class extraction for Rails' strict locals (#19525)
Align @utility name validation with Oxide scanner rules (#19524)
Fix infinite loop when using @variant inside @custom-variant (#19633)
Allow multiples of .25 in aspect-* fractions (e.g. aspect-8.5/11) (#19688)
Ensure changes to external files listed via @source trigger a full page reload when using @tailwindcss/vite (#19670)
Improve performance of Oxide scanner in bigger projects by reducing file system walks (#19632)
Ensure import aliases in Astro v5 work without crashing when using @tailwindcss/vite (#19677)
Allow escape characters in @utility names to improve support with formatters such as Biome (#19626)
Fix incorrect canonicalization results when canonicalizing multiple times (#19675)
Add .jj to default ignored content directories (#19687)

Deprecate start-* and end-* utilities in favor of inline-s-* and inline-e-* utilities (#19613)